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Natural fibre products Quiz 16

Theme: Natural Fibre Products NFP Quiz 16 Natural fibre products Quiz 16

Natural fibre products Quiz 16

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Question 1 of 10

1. Question
1. What is the primary goal of converting operations in the paper and board industry?
- A) To reduce the cost of production
- B) To increase the weight of the paper
- C) To add value to achieve properties distinctly different from those of basic paper and paperboard
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Question 2 of 10

2. Question
2. Name three specific properties that converting operations aim to achieve in paper and board.
- A) Color, texture, and weight
- B) Barrier properties, sealability, and resistance to wear
- C) Flexibility, transparency, and elasticity
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Question 3 of 10

3. Question
3. Which is not an example of a converting process?
- A) Printing and dyeing
- B) Forming
- C) Cutting and folding
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Question 4 of 10

4. Question
4. What is extrusion coating and what benefits does it provide to paper and paperboard?
- A) A technique for increasing the thickness of paper
- B) A method of adding color to paper
- C) A process where molten plastic is applied in film form onto a rapidly moving web, providing water and gas barriers and improving sealing properties
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Question 5 of 10

5. Question
5. What are the three basic operations in the extrusion coating process?
- A) Printing, dyeing, and drying
- B) Cutting, folding, and gluing
- C) Extrusion of plastic into film, conveying, handling and treating of the paper substrate, and combining of paper web and plastic film together
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Question 6 of 10

6. Question
6. What is the role of the chill roll in the extrusion coating process?
- A) To heat the paper before coating
- B) To provide rapid cooling in the nip to create good bonding (adhesion) between the polymer coating and the paper
- C) To add color to the paper
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Question 7 of 10

7. Question
7. What are some common polymers used in extrusion coating?
- A) Low-density polyethylene (LDPE), ethylene vinyl alcohol (EVOH), and polyethylene terephthalate (PET)
- B) Polyvinyl chloride (PVC), polystyrene (PS), and polypropylene (PP)
- C) Nylon, polyester, and acrylic
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Question 8 of 10

8. Question
8. What is the purpose of surface treatments like flame, corona, and plasma in the converting process?
- A) To improve adhesion properties by increasing surface energy, introducing functional groups, and removing contaminants
- B) To add color to the paper
- C) To increase the weight of the paper
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Question 9 of 10

9. Question
9. What are the main techniques for lamination in the packaging industry?
- A) Wax and hot melt lamination, extrusion lamination, wet lamination, dry lamination, and solventless lamination
- B) Cutting, folding, and gluing
- C) Printing, dyeing, and drying
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Question 10 of 10

10. Question
10. What is the significance of biopolymers in the converting process?
- A) They are used to add color to paper
- B) They offer good resistance and barrier properties against grease and oxygen but often lack water resistance
- C) They increase the weight of the paper
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This page has been updated 07.01.2026

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